package com.lengxf.design;

import java.util.ArrayList;
import java.util.List;

public class Client {

    public static void main(String[] args) {
        List<Object> products = new ArrayList<>();
        products.add("倚天剑");
        products.add("屠龙刀");
        products.add("断肠草");
        products.add("葵花宝典");
        products.add("四十二章经");

        AbstractObjectList list = new ProductList(products);
        AbstractIterator iterator = list.createIterator();

        System.out.println("正向遍历:");
        while (!iterator.isLast()) {
            System.out.println(iterator.getNextItem() + ",");
            iterator.next();
        }

        System.out.println("---------------------");
        System.out.println("逆向遍历:");

        while (!iterator.isFirst()) {
            System.out.println(iterator.getPreviousItem() + ",");
            iterator.previous();
        }
    }

}
